The Collaborative International Dictionary
Woad-waxen \Woad"-wax`en\, n. [Cf. Wood-wax.] (Bot.) A leguminous plant ( Genista tinctoria) of Europe and Russian Asia, and adventitious in America; -- called also greenwood, greenweed, dyer's greenweed, and whin, wood-wash, wood-wax, and wood-waxen.
dyer's broom \dyer's broom\, dyer's-broom \dyer's-broom\n. small Eurasian shrub ( Genista tinctoria) having clusters of yellow flowers that yield a dye; common as weed in England and U.S.; sometimes grown as an ornamental.
Syn: woodwaxen, dyer's greenweed, dyer's weed, dyer's rocket, dyeweed, greenweed, whin, woadwaxen, Genista tinctoria.
Wikipedia
Genista tinctoria (dyer’s greenweed or dyer's broom) is a species of flowering plant of the family Fabaceae, native to meadows and pastures in Europe and Turkey. Its other common names include dyer's whin, waxen woad and waxen wood.
Usage examples of "genista tinctoria".
Dyer's broom aka woodwaxen, greenweed [Genista tinctoria]: Source of a yellow dye.